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标题：New fluorogenic probes for neutral and alkaline ceramidases
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作者：Mireia Casasampere ; Mireia Casasampere ; Núria Bielsa 等
期刊名称：JLR Papers In Press
印刷版ISSN：0022-2275
电子版ISSN：1539-7262
出版年度：2019
卷号：60
期号：6
页码：1174-1181
DOI：10.1194/jlr.D092759
出版社：American Society for Biochemistry and Molecular Biology
摘要：New fluorogenic ceramidase substrates derived from the N -acyl modification of our previously reported probes (RBM14) are reported. While none of the new probes were superior to the known RBM14C12 as acid ceramidase substrates, the corresponding nervonic acid amide (RBM14C24:1) is an efficient and selective substrate for the recombinant human neutral ceramidase, both in cell lysates and in intact cells. A second generation of substrates, incorporating the natural 2-( N -acylamino)-1,3-diol-4-ene framework (compounds RBM15) is also reported. Among them, the corresponding fatty acyl amides with an unsaturated N -acyl chain can be used as substrates to determine alkaline ceramidase (ACER)1 and ACER2 activities. In particular, compound RBM15C18:1 has emerged as the best fluorogenic probe reported so far to measure ACER1 and ACER2 activities in a 96-well plate format..
关键词：substrate ; sphingolipids ; umbelliferone ; ceramides